<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="https://unpkg.com/axios/dist/axios.min.js"></script>
</head>

<body>
    <h1>axios请求拦截器</h1>
    <button id="btn">发送请求</button>
    
    <script>
        const myAxios = axios.create({
            baseURL:',',
            timeout:10000,
            headers:{}
        })

        myAxios.interceptors.request.use((config) =>{
            alert('我要发请求了');
            return config;
        },
        (err) => {
            return Promise.reject(err.message)
        });

        const oBtn = document.getElementById('btn');
        oBtn.onclick = async function (){
            const result = await myAxios.get('/user',{
                params:{
                    userId:'011'
                }
            })
            console.log(result,'result');
        }
    </script>
</body>

</html>